3 years ago

How do you work this out in confused?

Mathematics

2 answers:

balandron [24]3 years ago

6 0

I think you have to measure the angle of y

Leokris [45]3 years ago

4 0

I think you either need to double 35 or use a protractor. Hope this is helpful!

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What is the conjugate of 5 - 4i?

xxTIMURxx [149]

Answer:

5 + 4i

Step-by-step explanation:

In general, the conjugate of a + bi is a - bi

5 0

3 years ago

The area of the following equilateral triangle is 62.4 square feet that is he height

Vikentia [17]

The height of this triangle would be 10.4

In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.

S = $\frac{2}{3}3^{\frac{3}{4}} \sqrt{A}$

In this, S is the length of the side and A is the area. So we plug in and get:

S = $\frac{2}{3}3^{\frac{3}{4}} \sqrt{62.4}$

S = $\frac{2}{3}3^{\frac{3}{4}} 7.89$

S = 12

Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.

$a^{2} + b^{2} = c^{2}$